Abstract
                ABSTRACT   Background: To survive in this competitive world, one has to go through a lot of stresses & strains which, in due course of time, reflected  in altered physiology of body. One such change is the cardiovascular response to cold stress. Yoga has been reported to be beneficial as a  de-stressing technique.   Aims & Objective: To investigate whether regular practice of Yoga which includes Suryanamaskar, Pranayama & Meditation for 3  months could reduce the cardio-vascular hyper-reactivity induced by cold stress.  Materials and Methods: In the present study, 53 young healthy medical students underwent cold pressor test. 20 turned out to be hyper  reactors to this test. These hyper reactors performed Yoga (Suryanamaskar, Pranayama & Meditation) for 3 months and Cold Pressor  Test was again performed at the end of this period and cardiovascular hyper-reactivity (parameters are Blood pressure, Pulse rate, and  Respiratory rate) before and after yoga compared.   Results: Our results showed that 14 out of original 20 hyper reactors (70 %, P<0.001) were converted to hypo reactors.  Conclusion: Regular practice of Yoga reduces cardiovascular hyper-reactivity to cold pressor test. If we can spread its benefits and  importance to the society we can reduce the risks of many diseases especially those related to stress.